Unable to delete index, unable to mark it as read-only false

[Carlos_Fernando_Palm (Carlos Fernando Palma Roldan)]

I tried following the solution here

Unable to delete index

I can't remember which version they fixed this in, but I recall there being a change that allowed you to unset the read-only flag. Older versions (and again, I'm not sure where the cutoff is) did not allow you to unset read-only once set, resulting in an error message like the one you're showing. Have you tried an outright: PUT /indexname/_settings { "index.blocks.read_only": false } ...to set the index back to full read/write capacity?

But in my case running
PUT my_index/_settings
{
"settings": {
"index.blocks.read-only": false
}
}

yields
FORBIDDEN/5/index read-only (api)

So I am in a catch 22 situation where my index needs to be set to NOT read only but I can write to the settings because it is read only. My version is 8.12

[stephenb (Stephen Brown)]

Hi @Carlos_Fernando_Palm

Bad syntax

Incorrect
"index.blocks.read-only": false

Correct
"index.blocks.read_only": false
..................^